I've placed a few orders over time but, I've had mixed results with Bowman rings.
Most I have received were very poor quality with flashing on the edges that needed to be trimmed and very rough sealing surface that was so bad it couldn't be lapped out without going into ring float territory.
Also, the shipping method was poor. Multiple rings thrown in stacked on top of each other in crushable envelope run through the postal system were all nicked and bent on arrival.
I tried to get the rings made thicker so I could lap the rough surface off and still maintain proper side gap and also to have the rings shipped in a crush proof box but these requests were met with much narcissism.
Customer service was less than stellar. Returned rings were thrown out and my concerns dismissed via email. Replacement rings were the same poor machine work and bent from shipping in the same flexible package and he expected payment for the replacements. It's a shame he couldn't consider a few simple requests.
MM